Anagh



(No Model.)

T. B. KAVANAGH.

BUTTER DISH REFRIGERATOR.

Patented Aug. 10, 1886.

- I Suva M501 351 I fl bl om ww s U ITED STAT PATENT Orrica.

TERENCE BOALAND KAVANAGH, OF NElV YQRK, N. Y.

BUTTER-DISH REFRIGERATOR.

SPECIFICATION forming part of Letters Patent No. 347,049. dated August 10, 1886.-

Application filed JnneJ, 1886, Serial No. 203,957. (No model.)

To all whom it may concern.-

Be it known that I, TERENoE BOALAND KAV- ANAGH, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful Improvement in Butter-Dish Refrigerators, of which the following is a specification.

My invention relates to improvements in portable refrigerators for use on butter and like dishes; and it consists of thepeenliar construction and combination of'parts, substantially as hereinafter fully set forth, and particularly pointed out in the claims.

The object of my present invention is to provide improved means especially adapted for use in connection with butter-dishes to maintain the butter therein. in a pure, hard, and palatable state while it is on the table,instead of allowing it to become oily at the edges and hard in the middle, as is the case with some devices in which the refrigerant or ice is directly under the mass of the butter and at its center. These extreme degreesin the temperature of the butter tend to destroy its delicate flavor, and also cause a considerable wastage of butter, because it cannot be worked over again with any degree of success after it has been placed on the table and reduced to an oily state at the edges.

A further object of this invention is to provide means whereby the refrigerant is kept or held out of contact with the butter to prevent deteriorating the same, and at the same time maintain the butter at'a uniform temperature, and to provide such a device which will be cheap and inexpensive, simple, and strong.

In the accompanying drawings, which illustrates a portable butter-dish refrigerator embodying my invention, Figure l is a side elevation in position upon a butter-dish. Fig. 2 is a vertical central sectional view removed from the butter-dish. Fig. 3 is a bottom plan view.

Referring to the drawings, in which like letters of reference denote corresponding parts in all the figures, A designates a portable refrigerator, especially adapted for use in connection with butter-dishes embodying my i11- vention,which consists,essentially,of an outer inclosing shell or casing, B, aninner shell, 0, inclosed within the outer shell and arranged out of contact therewith at its sides, and conveyingtubes D, extending up into the chamber of the outer shell and opening through the lower edges of the inner shell to conduct the condensed and cold air from the space in the outer shell, where the refrigerant is placed, into the butter-dish, as will more fully appear presently. The outer shell, B, is made conical in form or with inclined and converging sides, and it is largest at its base, where it is provided with an outwardly-extended flange, 1), arranged in a horizontal position, and a vertical flange, I), that depends from the free edges of the horizontal flange. The horizontal flange rests upon the upper edges of the butter-dish, and the vertical flange bears against the sides of the upper edge of the said dish, to effectually prevent the escape of the condensed and cold air from the butter-dish when the portable refrigerator A is placed over the same to maintain the butter contained therein in a palatable state and at a uniform temperature. The inner shell, G, is also made conical in form or with inclined sides, t-heinelination of the sides of the shell 0 being greater than the angle of the sides of the shell B. The lower edges of the inner shell, 0, are secured to the inner surface of the outer shell, B, by means of solder or the like, and at a short distance from the lower edge of the outer shell, and the said inner shell is arranged out of contact with the outer shell, to provide an intermediate space or chamber, F, in which the refrigerant or ice is placed to condense the air in the said chamber F before it is discharged through the tubes or pipes D into the butter-dish. The upper end of the inner shell is closed by means of a cap or head, 0, and it terminates below the upper edges of the outer shell to increase the area of the chamber F, and consequently the quantity of ice in the said chamber can be increased; and the lower enlarged end of the said shell 0 is left open, as shown, so that an air-chamber, G, is provided, which extends up into the shell 0, and the air therein comes in contact with the walls of the inner shell, against which the refrigerant lies, so that the air in the chamber G is kept in a cooler state than it would otherwise beif the lower end of theinner shell were closed to exclude the circulation of air therein. The conveyingtubes D are arranged at the sides of the outer shell, and between the latter and the inner shell, and the upper ends of the said tubes or pipes extend up into the chamber F, above the refrigerant therein, so that no ice or water can enter the pipes F and be conveyed thereby into the butter-dish and come in contact with and deteriorate the quality of the butter. The lower end of the con ducting-pipes open into the chamber G and through the lower edges of the inner shell, and the condensed air from the chamber F is carried by the said pipes from the chamber F into the chamber G, and thence to the butterdish, the air in the chamber G circulating freely in the same and the butter-dish, to maintain the butter at a uni form temperature. The outer shell, I is provided with an open upper end, which is closed by a removable cover, B, so that ready access can be had to the chamber F to place the refrigerant therein or clean the chamber; and the said shell is further provided with a handle or bail, 13 so that it can be conveniently and easily carried or transported.

\Vhen the device is in use,the lower flanged edges of the outer shell are fitted on the upper edges of the butter-dish, which may be of the ordinary orany preferred form, to prevent the escape of the condensed air from the said dish, and the refrigerant is placed in the chamber F, and the cover 13 replaced to prevent the escape of the cold air from the chamber. The air in the chamber is condensed by the action of the refrigerant, and it passes or escapes through the conducting-pipes 1) into the chamber G, from whence it passes or circulates around the butter and within the dish contain ing the butter. The butter is maintained or held out of contact with the refrigerant, and by means of the condensed air in the chamber G and the butter-dish it is maintained at a uniform temperature at all times without the liability to become reduced to an oily state at its edges.

The device can be made of different sizes and shapes, to adapt it for use upon butterdishes of any construction, and it can be ornamented to suit the taste of the purchaser.

The device can also be manufactured very cheaply, and it is simple and strong in construetion and thoroughly effective for the purposes designed, as I have found by practical experience and tests.

Various slight changes in the form and proportion of parts and details of construction may be made without departing from the principle of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a butter-dish refrigerator, the combination of an outer shell having an open lower end, an inner shell carried by the outershell and inelosed within the same to form an intermediate chamber, F, for the refrigerant, and having an open lower end to provide a chamber, G, in which the condensed air is free to circulate and come in contact with the said inner shcll,against which the refrigerant; lies, and the conducting-tubes openinginto the said chambers F and G, substantially as dcscri bed, for the purpose set forth.

2. In a butter-dish refrigerator, the combination of an outer shell having an open lower end, and the lateral and depending flanges adapted to be fitted snugly over the upper edges of a butter-dish, an inner shell having an open lowerend and an upper closed end, the said inner shell beinginelosed within theoutcr shell and out of contact with the same, and se' cured at its lower edges to the outershell, and the conducting tubes or pipes I), opening into the chamber G formed by the inner shell at their lowerends, and extending into the chainber 14 above the point therein at which the refrigerant lies, so as to exclude ice and water from the pipes, substantially as described.

3. A portable refrigerator,to be detachably fitted on a buttendish, consisting, essentially, of an outer shell having an open lower end, an inner shell incloscd within the outer shell and out of contact therewith at its sides to form an intermediate condensing chamber, the lower edges of the inner shell being secured to the outer shell near the lower end, and the conductingtubes opening into the condensing and circulating chambers, formed by the said shells, substantially as described, for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

TERENCE BOALANI) KAVANMHI.

*itncsses:

IV. G. McCoimAcK, J. IV. V0013. 

